CVE-2025-52991
This allows standard users to deceive the package manager into using directories with pre-existing content, potentially leading to unauthorized actions or data manipulation.
Does this matter?
Lower severity and a low EPSS score (0.17%). Track it; it rarely justifies an emergency change on its own.
Description
The Nix, Lix, and Guix package managers default to using temporary build directories in a world-readable and world-writable location. This allows standard users to deceive the package manager into using directories with pre-existing content, potentially leading to unauthorized actions or data manipulation. This affects Nix before 2.24.15, 2.26.4, 2.28.4, and 2.29.1; Lix before 2.91.2, 2.92.2, and 2.93.1; and Guix before 1.4.0-38.0e79d5b.
- CVSS 3.1
- 3.2 LOWCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N
- EPSS
- 0.17% probability · 6th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-276
- Source
- cve@mitre.org
EPSS 0.2% since 27 October 2026; no change recorded yet. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- https://discourse.nixos.org/t/security-advisory-privilege-escalations-in-nix-lix-and-guix/66017
- https://guix.gnu.org/en/blog/2025/privilege-escalation-vulnerabilities-2025/
- https://labs.snyk.io
- https://lix.systems/blog/2025-06-24-lix-cves/
- https://security-tracker.debian.org/tracker/CVE-2025-52991
- https://security.snyk.io/vuln/?search=CVE-2025-52991
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.